Running a function in the background in Codeigniter 3 - php

Question

I am trying to send a message to all my telegram bot subscribers. However, due to their large number curl_exec inside a loop of thousands users take lots of time to finish the function.
This is a problem, because if users send some request from my bot during the loop, they have to wait untill telegram api answers to my previous loop requests and then only to their requests. There will be confusion to TELEGRAM API also, and it may repeat same message to the users 2-3 times at this stage.
So I want to do it in the background, so that users keep working with the bot and not wait, and also I will not care how long it will take to send message to all subscribers.
I would be very grateful if you could help.

Answer 1

check this out
function broadcast($message) {
$url = 'https://api.telegram.org/bot' . getenv('TELEGRAM_BOT_TOKEN') . '/sendMessage';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'chat_id=' . getenv('TELEGRAM_CHAT_ID') . '&text=' . $message);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}